(1) The Principal Act is amended by inserting the following after section 90:
"90A.
(1) In this section -
' Directive ' means Directive 2003/87/EC of the European Parliament and of the Council of 13 October 2003 establishing a scheme for greenhouse gas emission allowance trading within the Community and amending Council Directive 96/61/EC of 24 September 1996;
' greenhouse gas emissions allowance ' means -
(a) an allowance, permit, licence or right to emit during a specified period, a specified amount of carbon dioxide or any other greenhouse gas as defined in the Directive where such allowance, permit, licence or right is issued by a State or by an inter-governmental or supra-national institution pursuant to a scheme which -
(i) imposes limitations on the emission of such greenhouse gases, and
(ii) allows the transfer for value of such allowances, permits, licences or rights, or
(b) any right that is directly attributable to anything within paragraph (a).
(2) Subject to subsection (
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